Educational device



Dec. 29, 1931. c. M. HElD 1,838,942

EDUCATIONAL DEVICE Filed April 22, 1951 s sheets-sheet 1 auhel E \j. 37 l ig It. I x

: uu nm m dmrzegmflewg Mmwonuzvs Dec. 29, 1931. c. M. HEID 1,333,942

EDUCATIONAL DEVICE Filed April 22, 1931 3 Sheets-Sheet 2 Patented Dec. 29, 1931 CHARLES M. I-IEID, on ERIE, PENNSYLVANIA nnUcnTIoNAL nEvicE Application filed April 22,

shaped bodies representing the earth, 'sun' and moon, together with a novel construction of means for moving the same, to illustrate the earth turning on its axis, and its movements around the sun, the moons travel around the earth, and the node period of the moon.

The nature and advantages of the invention will be better understood when the following detail description isread in connection with the accompanying drawings, the invention residing in the construction, combination and arrangement of parts as claimed. i a

In the drawings formingpart of this application like numerals of reference indicate similar parts in the several views'and where- Figure 1 is a view in elevation of the dev1ce.

Figure 2 is a view taken at' a right angle to Figure 1.

Figure 3 is an enlarged fragmentary sectional-view of the upper part of the device. Figure 4 isa similar view of the lower part thereof. 1

Figure 5 is a fragmentary sectional view. Figure 6 is a View of the sign disk.

The device forming the subject matter ofthe present invention is adapted to be supprovidedwith a suitable base (notshown). Secured to one side of this standard ad acent its upper end is a substantially U-shaped bracket "11.. Journaled in the standard 10 and extending through the bracket 11 is a shaft '12 supporting on its outer end a sphere 13 representing the sun. The shaft 12 iszrotated bya crank handle 14 arranged at the rear of the device. Also loosely mounted on theshaft 12 directly behind the sun 13 is a disk 15 having a weight 16 to hold the same in proper cent end of the shaft 30 rotatably resent the earth turning about its ported in a vertical position on a standard 10 1931. ser al No. 532,076.

position. One side of this disk is provided with the months-of the year, and the different seasons as illustrated in Figure 1.

Rotatably mounted on the shaft 12 is'a hollow shaft 17 which carries the section 18 of anadjustable arm, the other section- 19 being slidablyassociatedwith the section 18, and held fixed relatively thereto by a wing nut and bolt. The upperend of this arm carries asleeve 20 forming a bearing for a hollow shaft 21, which supports a frame-like strucmm 22. Positioned within the shaft'21 is'a hollow shaft-23 formed with a shoulder 24 bearing against the frame 22, while projecting from the shoulder is an arm 25 constituting a bearing for the shaft 26. Carried by the outer end of the shaft 26 is a sphere representing the earth and indicated at 27. Keyed to the shaft 26 is a bevel gear 28 meshing with a similar gear. 29 fixed to the adj amounted within the hollow shaft 23. Rotation is imparted to the shaft 30 in a manner'to be presently described, thus representing rotation of the earth about its axis.

For this purpose I sprocket 31 keyed to the shaft 12 and trained over this sprocket and a relatively smaller sprocket 32 is an endless chain 33. The sprocket 32 is keyed on a stub shaft 34 journaled in a bearing 35 of th'earm section 19 abovereferred to. L'Oarriedbyone end ofthe shaft 34 is a gear 36' which meshes with a gear 38 on the shaft 30. Manifestly, when the shaft :12 is rotated by the crank 14 rotary motion is imparted to the shaft 30,:thereby rotating the shaft 26 and its sphere, to repaxis. For moving the-earth about the sun I employ a gear 39 keyed to the shaft 12 and mesha smaller gear-42 keyed on the hollow shaft 17 Consequently when thecrank handle 14.

is operated,rotation is imparted to the hollowshaft 17 which carries the arm, thesection19 of which supports the shaft21, so that the entirefmechanism'is rotated about the sun; One rotationof the adjustablearm preferably employ a 9 with a smaller bevel gear 49 keyed to the shaft 50 journaled intheframe 22: The.

shaft 50 supports a gear 51 meshing with the internal teeth 52 of a ring gear 53'supported between a plurality of, grooved rollers, 54 carried by the frame 22. Projecting from the ring gear are spider, arms: 55 which sup? port an annulus 56;on.which,is mountfi lithe sphere 57 r pre ent ng he moon The: en nulns; 56 not only supportsthe sphere, but

. is employed to.clearlyillustratethe angle at which the moon, istraveling with; relation to the, earthsorbit, and; the moonls Fai h 7 not only when in, motion, but; also when at rest; Obviously when; the shaft; 50 is, rotated; by reason of its association witlnthe mechanism, gear- 51 rotates thering. gear: [iii-together; with the moon supporting annulus.

The node period and serpentine morements of, the moon are;pnoyidedgby a sproclr,

et- 58 supported by the. hub 59 supponted= by thebracket 1,111 and sprocket 60 carried by the hollow shaft; 21 oyerwhich istrainedan endless chain 61. To keep thesphere repese ing he earth at. he same. verticelrpcsitijon while travelingits course around the sun, I-, employ asproclret, 6.2 mounted'lon the hub .58 oft-he bracketll and: over which and sprockettiS-keyed to the shaaft, 2 3,is tr ai'ned an endlesszchain 6 1-, both sprocl-rets62 and; 63 being of the same size. Manifestly D have devised a novel: construction; of means for, illustrating the relatiyemovements. of? the earth, sun and; moon, and control} the same from a single operating handle.

While it; is believed that; from, the foregoingdescription the nature andjadvantages of thelinnention willibe readily apparent, I: desire to hayeit understood;thatsuch changes maybe resortedto when desiredias falltwithin the scope ofi whatyisclaimed.

that, is claimed: is:

1'. A deViceof-jthe character describedtcomprising a; rotatable shaft, a, sphere carried thereby representing the sun, means formtatingsaid. shaft, a hollow: shaftz rotatably mounted on the first mentioned shaft, anadjustable arm supported by the hollow shaft, mechanism supported by theouterend: of saidarm including a;spheremountedfor rotation andirepresenting the earth, means opc-rated tirom saidshaft for rotating theear-th about its axis, aframe, a\ ring gear; rotatably supported onsaid arm, a-ringdike member carriedlby the ring gear, a sphererepresent- "'ing the moon supported: by the ring-like member for rotation therewith about the earth, means operated from said shaft for rotating the ring gear, and means operable from said shaft for rotating said arm and the mechanism carried thereby about the sun.

2, Adevice ofthe character described comprising; a, not-atable shaft, a, sphere carried thereby representing the sun, means for rotating said shaft, a hollow shaft rotatably mountedon-the iirst mentioned shaft, an arm supported by said hollow shaft, mechanism supported-by the outer end of said arm and including, a sphere mounted for rotation and representing the earth, means operated from said! shaft, forrotating the earth, a hollow shaft; jounnaled in the'cuter end, or said arm, a; frame carried-by said; shaft), a. sphere representing the moon supported by said frame fprmoyfilncntg about the earth, means operatedfnom the fifrst mentioned shaft for rotat ing; the, moon about the earth, and, means operated from, the first; mentioned shaft for rotating the arm; and said mechanism supported, thereby about the sun.

3. A device of the character described comprising a; vertically disposed standard, a shaft: journalcd; thereon, a handle for rotating the shaiina sphere carried by the shaft and representing the sun, arm rotatable about said shaft and including a counterbalancing weight,a bearing-formed on the outer end! of said, arm, mechanism supported by said: arm, and; including a; sphere mounted for rotation: and, representing the earth, means for rotating said, eantl'i including a shaft operated from the first mentioned shaft, a hollow; shaft: "otatably sup ported by the second mentioned; shaft, airamc carrie l y second, mentioned sl1af;t, a ring gear; rotat ably mounted on said frame, a sphere c 11- ried; by; the ring gear and representing the moon, means operable from the first mentioned shaft-for rotating the moon about the earth, and means operated from the first mentionedr shaft. for rotating; said; arm and the mechanismicarried thereby about the sun.

4". A: device of the character described comprising a rotatable shaft, a sphere car- 7 nied'thereby-andz representing the sun, means for rotating saidshat't, a hollow shait'grotatably-mounted on the first mentioned shaft, an adjustable arm. carried by the hollow shaft, a counterbalancingweight associated withsaid. arm, mechanism supported by the outerend of the arm and including a stub shatt-mountedifor, rotation, a frame, asphere mounted for rotation in advance of the frame and representing the earth, means operated from-the-first mentioned shaft for rotating said. earth, a ring gearrotatably supported onlsaid frame, asphere supported the ringgear; formovement. therewith about therear-th and representing; the moon,

means for; rotating'said ring gear from the first mentioned shaft and including said stub shaft, and means operated from the first menioned shaft for rotating said arm and the mechanism supported thereby about the" sun. 7

5. A device of the character described comprising a vertically disposed standard, a

shaft journaled thereon, means for rotating the shaft, a sphere carried by the shaft and representing the sun, an arm rotatable about the shaft and including a counterbalancing Weight, mechanism supported by said arm and including a sphere mounted for rotation and representing the earth, a frame, spaced rollers supported by the frame, a ring gear rotatably mounted on said rollers, a ring-like member carried by said gear, a sphere supported by the ring-like member and representing the moon, means operable from the first mentioned shaft for moving the moon around the earth, and means operated from the first mentioned shaft for rotating said arm and the mechanism supported thereby about the sun. 7

6. A device of the character} described comprising a standard, a shaft journaled thereon, means for rotating the shaft, a sphere carried by the shaft and representing the sun, an arm rotatable about said shaft, a counterbalancing Weight for said arm, mechanism supported by saidarm and including a sphere mounted for rotation and representing the earth, a stub shaft mounted on said arm and rotated from the first mentioned shaft, means for rotating the earth from said stub shaft, a frame, rollers carried by the frame, a ring gear supported by said rollers, an annulus carried by the gear, a sphere supported by the annulus for movement about the earth, means operated from said stub shaft for rotating said ring gear, andmeans operated from the first mentioned shaft for rotating said arm and themechanism supported thereby about the sun.

In testimony whereof I afiix my si ature.

CHARLES M. EID. 

